The DOI matches its Crossref record.
Reprodutibilidade e validade relativa do Questionário de Frequência Alimentar do ELSA-Brasil
Open accessAbstract
This study evaluated the reproducibility and relative validity of the Food Frequency Questionnaire (FFQ) used in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil). Participants (n = 281) completed the FFQ and three food records on two occasions during a 12-month period. Energy and nutrient values from food records were disattenuated and log-transformed. Reproducibility and validity were assessed by the intra-class correlation coefficient (ICC). Agreement between the two methods was evaluated by classification in tertiles. In the evaluation of reproducibility, ICC estimated ranged from 0.55 to 0.83 for protein and vitamin E, respectively. On relative validity, ICC ranged from 0.20 to 0.72 for selenium and calcium, respectively. Exact and adjacent agreement between methods varied from 82.9% for vitamin E to 89% for lipids and calcium (mean 86%). Average disagreement was 13.6%. In conclusion, this FFQ showed satisfactory reliability for all nutrients and reasonable validity, especially for energy, macronutrients, calcium, potassium, and vitamins E and C.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cited by
Cohort Profile: Longitudinal Study of Adult Health (ELSA-Brasil)
Schmidt, M. I., Duncan, B. B., Mill, J. G., Lotufo, P. A., Chor, D., Barreto, S. M., Aquino, E. M., Passos, V. M. A., Matos, S. M., Molina, M. D. C. B., et al. (2015) · International Journal of Epidemiology · doi:10.1093/ije/dyu027 · Cited by 657
Self-citationAssociation between consumption of ultraprocessed foods and cognitive decline
Gomes Gonçalves, N., Vidal Ferreira, N., Khandpur, N., Martinez Steele, E., Bertazzi Levy, R., Andrade Lotufo, P., Bensenor, I. M., Caramelli, P., Alvim de Matos, S. M., Marchioni, D. M., et al. (2023) · JAMA Neurology · doi:10.1001/jamaneurol.2022.4397 · Cited by 132
Metadata
- Authors
- Molina, M. D. C. B., Benseñor, I. M., Cardoso, L. D. O., Velasquez-Melendez, G., Drehmer, M., Pereira, T. S. S., Faria, C. P. D., Melere, C., Manato, L., Gomes, A. L. C., Fonseca, M. D. J. M. D., & Sichieri, R.
- Venue
- Cadernos de Saúde Pública
- Publisher
- FapUNIFESP (SciELO)
- Published
- 2013-02
- Volume
- 29
- Issue
- 2
- Pages
- 379-389
- ISSN
- 0102-311X (ISSN-L)
- OpenAlex
- W2019176952
- Cited by
- 161
- References
- 0
- FWCI
- 8.19
- Type
- journal article
- Language
- en
- Open access
- diamond
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Reprodutibilidade e validade relativa do Questionário de Frequência Alimentar do ELSA-Brasil. https://app.cochat.ai/papers/10.1590/s0102-311x2013000600024
- The paper
- Molina, M. D. C. B., Benseñor, I. M., Cardoso, L. D. O., Velasquez-Melendez, G., Drehmer, M., Pereira, T. S. S., Faria, C. P. D., Melere, C., Manato, L., Gomes, A. L. C., Fonseca, M. D. J. M. D., & Sichieri, R. (2013). Reprodutibilidade e validade relativa do Questionário de Frequência Alimentar do ELSA-Brasil. Cadernos de Saúde Pública. https://doi.org/10.1590/s0102-311x2013000600024
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.